perry



j. S. PERRY.

HotAir Furnace.

Patented June 22, 1869.

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N. PETEHS. Plwla-Uuwgmphur. washington. uc. I

innd gnam JOHN s. PERRY, or ALBANY, NEW YORK.

Letters Patent No. 91,560, dated J'ufne 22, 1869.

The Schedule referred to in these Letters Patent and making part of the name.

To all whom it may concern:

Be it known that I, 'JOHN S. PERRY, of the city and county of Albany, and State of New York, have invented a new and useful Improvement in Hot-Air Furnaces; and I do hereby declare that the following is a full, clear, and exact description thereof, refe'rence being had tothe accompanying drawings, making a part of this specification, in ywhich- Figure l is a perspective view, showing the furnace mounted on rollers, and drawn ont of its air-chamber,

heater permanently upon a foundation, and then build around it the casing of masonry, so that the whole becomes, when finish-ed, a permanent structure, and can only be repaired by the expense and loss of time re quired to take down the brick wall.

The nature of my invention consists in combining witha permanent structure of masonry, constituting the outer wall, or casing of a hot-air chamber and furnace-receptacle, a portable furnace, which is mounted upon wheels, or rollers, resting upon or in suitable guides, and otherwise so constructed, that when in place it will form a tight joint around its front plate or wall, and when desired to remove it from its casing, this can be done by simply rolling it out upon its track, as will be hereinafter explained.

To enable others skilled 'in the art to understand iny invention, I will describe its construction and operation.

In carrying out m'y invention, any of the well-known forms of furnaces may be employed, and, therefore, I shall not confine myself to 'the precise, form shown in the drawings.

The furnace shown in figs. l and 2 is mounted upon a horizontal hearth-plate, J, which is supported upon a rail-track, b b, by means of four or more flanged or plain-faced Wheels, or rollers a a.

Upon this hearth-plate J is constructed an ash-pit, E, and above this ash-pit is a fire-pot, B', from which rises an upwardly-flaring combustion-chamber, B.

This combustion-chamber terminates upwardly, in a dome, and also a pipe,` l?, which latter leads off to au escape-pipe, in any suitable manner.

The ash-pit entrance, and also the entrance to the `\i\re-pot, are made through a front wall, D, which rises perpendieularly from the hearth-plate J, and is constructed with bevelled flanges l d upon its edges, which are adapted to lit snugly against corresponding bevelled surfaces, surrounding the opening leading into a casing,A.

The casing A may be built up in 'theusual Wellknown manner of brick-work, with this exception, to wit, it is not built around the furnace, so as to retain permanently within it the furnace, as hitherto.

G represents the foundation of the furnace, which is properly graded and adapted for receiving and holding in place the rails b b, which should be of suiicient length to allow the furnace to be drawn out of its vcasing A far enough to obtain convenient access to the interior of this casing, as represented in lig. l in black lines, and in fig. 2 in red lines.

The rails b b not only serve as supports for allowing the furnace to be easily moved out of and into its casing, but they will also serve as guides for keeping thefurnace and its appendages in proper relation with respect to the opening in the said casmg.

aThe casing is constructed, lined, and finished before the furnace is moved to its place, reference being had in its construction to the shape and size of the furnace and the front wall D thereof, so that when the casing is finished and the furnace adj usted within it, the bevelled flange d of said wall will tit snugly in' contact with the surface which is presented around the opening in the casing.

It will be seen from the above description, that by my invention access can be readily had to the interior of the casing A, by drawing or rolling out of it its furnace, thus obviating the labor, expense, and unpleasantnaess attending VtheV taking down of the brick-work composing such casing, as is necessary in all brick-set furnaces hitherto constructed.

If desirable,l the front wall D may be provided with an eye, g, by which to attach a hook, for readily drawing the furnace out of its chamber, or which may be used to attach the hook of a block and tackle, for very large furnaces, where more than ordinary power is required to remove them.

If desirable, the joint surrounding the flange d may be sealed'with cement, after the furnace is adjusted to its place within its chamber. This will prevent the entrance or escape of air.

While I prefer to adopt, in most instances, brick- Work for the walls surrounding and enclosing the furnace, it is obvious that non-conducting walls may be made in any ofthe well-known ways.

I do not claim afire-place heater mounted on guides, and arranged as shown in the Letters Patent of J. M. Thatcher, December 22, 1868.

Having described my invention,

What I claim as new, and desire 'to secure by Letbe taken apart itself', or its casing, or wall to be disters Patent, isturbed, substantially as described.

So constructing a furnace-casing, or wall, and the JOHN S. PERRY.

lma to be tted thereto, and mounting the latter upon wheels, or rollers, that an air-tight hot-air Witnesses:

chamber will be secured, and the furnace made capa- J ULIUs Hmscn, ble of being readily removed, without requiring to B.. T. CAMPBELL. 

